<?

/*
 * Plugin Name: PayXay - Payment gateway for Woocommerce
 * Plugin URI: https://www.payxaf.com/plug-in/pauxaf-payment-gateway/
 * Description: This plugin uses PayXaf API for mobile money payment systems.
 * Author: Payxaf
 * Author URI: https://www.payxaf.com/
 * Version: 0.0.1
 * License URL: http://www.gnu.org/licenses/gpl-2.0.txt
 */

 /*
 * This action hook registers our PHP class as a WooCommerce payment gateway
 */


/**
 * Try to prevent direct access data leaks
 */
if (!defined('ABSPATH')) exit;


/**
 * Check if WooCommerce is present and active
 **/
if (!in_array('woocommerce/woocommerce.php', apply_filters('active_plugins', get_option('active_plugins')))) return;


/**
 * Add Payxaf to WooCommerce available gateways
 * @param array $gateways all available WooCommerce gateways
 * @return array $gateways all WooCommerce gateways + Payxaf gateway
 */
function payxaf_add_to_woocommerce(array $gateways): array
{
    $gateways[] = 'Payxaf_Woocommerce_Gateway';
    return $gateways;
}

add_filter('woocommerce_payment_gateways', 'payxaf_add_to_woocommerce');


/**
 * Called when the plugin loads
 */
function payxaf_gateway_init()
{
    class Payxaf_Woocommerce_Gateway extends WC_Payment_Gateway
    {
        const ID = 'pay_xaf';
        const API_URL = 'https://www.payxaf.com/';
        const SERVER_IP = '15.236.140.89';
        const CURRENCIES = ['XAF', 'EUR'];
        const SUPPORTED_CURRENCIES = ['XAF' => 1, 'XOF' => 1, 'EUR' => 650, 'USD' => 550];

        /**
         * @var string
         */
        private $public_key;
        /**
         * @var string
         */
        private $secret_key;
        /**
         * @var string
         */
        private $success_url;
        /**
         * @var bool
         */
        private $autocomplete_orders;

        /**
         * Constructor for the gateway.
         */
        public function __construct()
        {
            // The global ID for this Payment method
            $this->id = self::ID;

            // This basically defines your settings which are then loaded with init_settings()
            $this->init_form_fields();

            // After init_settings() is called, you can get the settings and load them into variables
            $this->init_settings();

            // Boolean. Can be set to true if you want payment fields to show on the checkout
            $this->has_fields = false;

            // Image to be displayed to the user
            $image_url = $this->get_image_url();
            // check if Payxaf icon image exists or not
            if (@getimagesize($image_url)) {
                //Show an image on the frontend
                $this->icon = $image_url;
            }

            // Payment method name for order details and emails
            $this->title = "Payxaf";

            // Payment method name for admin pages
            $this->method_title = "Payxaf - Payment Gateway for WooCommerce";

            // The description for this Payment Gateway, shown on the actual Payment options page on the backend
            $this->method_description = __(
                "Secured payments made simple - designed exclusively for WooCommerce stores. Accept mtn mobile money, Orange money, credit cards, debit cards, and other popular payment methods.  allows customers to conveniently checkout using our secure payment gateway",
                self::ID
            );

            // Define user set variables
            $this->order_button_text = $this->get_option('order_button_text');
            $this->description = $this->get_option('description');
            $this->public_key = $this->get_option('public_key');
            $this->secret_key = $this->get_option('secret_key');
            $this->success_url = $this->get_option('success_url');
            $this->autocomplete_orders = $this->get_option('autocomplete_orders') === 'yes';

            // Used to perform plugin information updated by the admin
            add_action('woocommerce_update_options_payment_gateways_' . $this->id, [$this, 'process_admin_options']);
        }

        /**
         * Generates a callback url only once
         */
        private function generate_success_url()
        {
            if (!$this->get_option('success_url')) {
                $this->update_option(
                    'success_url',
                    get_home_url() . '/wp-json/callback/' . md5(uniqid() . mt_rand())
                );
            }
        }

        /**
         * Image to be displayed to the user
         */
        private function get_test_mode(): string
        {
            $test_mode = $this->get_option('test_mode');
            $url = '';

            if ($test_mode === 'sand_box')
                $url = 'https://app.payxaf.com/sandbox/payment/initiate';
            else if ($test_mode === 'live')
                $url = 'https://app.payxaf.com/payment/initiate';

            return $url;
        }

        /**
         * Image to be displayed to the user
         */
        private function get_checkout_theme(): string
        {
            $checkout_theme = $this->get_option('dark');
            $theme = '';

            if ($checkout_theme === 'dark')
                $theme = 'dark';
            else if ($checkout_theme === 'light')
                $theme = 'light';

            return $theme;
        }

        /**
         * Image to be displayed to the user
         */
        private function get_image_url(): string
        {
            $payment_methods = $this->get_option('payment_methods');
            $image = 'payxaf_operators.png';

            if ($payment_methods === 'mobile')
                $image = 'payxaf_momo_om.png';
            else if ($payment_methods === 'credit_card')
                $image = 'payxaf_visa_master.png';

            return WP_PLUGIN_URL . '/' . plugin_basename(dirname(__FILE__)) . '/images/' . $image;
        }

        /**
         * Initializes gateway settings form
         */
        public function init_form_fields()
        {
            // Generate a callback url
            $this->generate_success_url();

            $this->form_fields = apply_filters(
                'payxaf_form_fields',
                [
                    'enabled' => [
                        'title' => __('Enable/Disable', self::ID),
                        'type' => 'checkbox',
                        'label' => __('Enable Payxaf', self::ID),
                        'description' => __('Check to enable this plugin', self::ID),
                        'default' => 'yes',
                        'desc_tip' => true,
                    ],
                    'test_mode' => [
                        'title' => __('Enabled live or test environment', self::ID),
                        'type' => 'select',
                        'description' => __('Use this payment gateway in test/sandbox mode, when testing the plugin. The tesing credentials are: Test Mode eMail: test_mode@mail.com     Test Mode Verification Code: 222666', self::ID),
                        'default' => "sandbox",
                        'options' => [
                            "sand_box" => __("Sandbox", self::ID),
                            "live" => __("Live", self::ID),
                        ],
                        'desc_tip' => true,
                    ],
                    'checkout_theme' => [
                        'title' => __('Select the the theme on the checkout of your shop.', self::ID),
                        'type' => 'select',
                        'description' => __('Choose either a dark or light theme for the checkout form.', self::ID),
                        'default' => "sandbox",
                        'options' => [
                            "sand_box" => __("Sandbox", self::ID),
                            "live" => __("Live", self::ID),
                            ],
                        'desc_tip' => true,
                    ],
                    'success_url' => [
                        'title' => __('Callback URL', self::ID),
                        'type' => 'hidden',
                        'description' => __('Copy the URL below and paste it in settings of your application in Payxaf <strong style="color: #00578A"><pre><code>' . $this->get_option('success_url') . '</code></pre></strong>', self::ID),
                    ],
                    'description' => [
                        'title' => __('Description', self::ID),
                        'type' => 'textarea',
                        'description' => __('Payment method description, visible by customers on your checkout page', self::ID),
                        'default' => __('Pay safely using Orange Money, MTN Mobile Money, VISA, MasterCard or Payxaf Wallet', self::ID),
                        'desc_tip' => true,
                    ],
                    'public_key' => [
                        'title' => __('Public key', self::ID),
                        'type' => 'text',
                        'description' => __('Copy and paste the public key from your mechant account on Payxaf', self::ID),
                        'default' => '',
                        'desc_tip' => true,
                    ],
                    'secret_key' => [
                        'title' => __('Secret key', self::ID),
                        'type' => 'text',
                        'description' => __('Copy and paste the secret key from your mechant account on Payxaf', self::ID),
                        'default' => '',
                        'desc_tip' => true,
                    ],
                    'payment_methods' => [
                        'title' => __('Enabled payment methods', self::ID),
                        'type' => 'select',
                        'description' => __('This will change operators logos displayed on your checkout page', self::ID),
                        'default' => "all",
                        'options' => [
                            "all" => __("All", self::ID),
                            "mobile" => "Mobile Money (OM + MoMo)",
                            "credit_card" => __("Credit Card (VISA + MasterCard)", self::ID),
                        ],
                        'desc_tip' => true,
                    ],
                    'order_button_text' => [
                        'title' => __('Payment button text', self::ID),
                        'type' => 'text',
                        'description' => __('Text of the payment button on which customers click to make the payment', self::ID),
                        'default' => __('Pay with Payxaf', self::ID),
                        'desc_tip' => true,
                    ],
                    'currency' => [
                        'title' => __('Payxaf currency', self::ID),
                        'type' => 'select',
                        'description' => __('This is the currency that your customers will see on payment page. If you choose Euro, only card payment will be available on payment page', self::ID),
                        'default' => "default",
                        'options' => [
                            "default" => __("Same as on WooCommerce", self::ID),
                            "XAF" => "CFA Franc (FCFA)",
                            "EUR" => __("Euro (€)", self::ID),
                            "USD" => __("Dollar ($)", self::ID),
                        ],
                        'desc_tip' => true,
                    ],
                    'autocomplete_orders' => array(
                        'title' => __('Autocomplete orders', self::ID),
                        'label' => __('Autocomplete orders on payment success', self::ID),
                        'type' => 'checkbox',
                        'description' => __('If enabled, orders statuses will go directly to complete after successful payment', self::ID),
                        'default' => 'no',
                        'desc_tip' => true,
                    ),
                ]);
            }

        public function get_public_key(): string
        {
            return $this->public_key;
        }

        public function get_secret_key(): string
        {
            return $this->secret_key;
        }

        public function get_success_url(): string
        {
            return $this->success_url;
        }

        public function get_autocomplete_orders(): bool
        {
            return $this->autocomplete_orders;
        }

        /**
         * Get order amount and currency for Payxaf
         * @throws Exception
         */
        private function get_order_amount_currency(WC_Order $order): array
        {
            $woocommerce_currency = get_woocommerce_currency();
            // Throws an exception when currency is not defined in PAYXAF_CURRENCIES
            if (!isset(self::SUPPORTED_CURRENCIES[$woocommerce_currency]))
                throw new Exception("Currency '$woocommerce_currency' is not currently supported. Please, try using one of the following: " . implode(', ', array_keys(self::SUPPORTED_CURRENCIES)));

            $currency = $this->get_option('currency');
            if (!in_array($currency, self::CURRENCIES))
                $currency = $woocommerce_currency;

            $amount = $order->get_total();
            if ($currency !== $woocommerce_currency)
                $amount *= self::SUPPORTED_CURRENCIES[$woocommerce_currency] / self::SUPPORTED_CURRENCIES[$currency];

            return compact('amount', 'currency');
        }

        /**
         * Checks if billing country is CM and billing phone is a valid Mobile Money phone
         */
        private function is_order_from_cameroon(WC_Order $order): bool
        {
            return $order->get_billing_country() === 'CM'
                && preg_match(
                    '/^((\+|00)?237)?6[5789][0-9]{7}$/',
                    preg_replace('/[^0-9]/', '', $order->get_billing_phone()) // Ignore non numeric
                );
        }

        /**
         * Returns user's locale
         */
        private function get_locale(): string
        {
            return strpos('fr_FR', get_locale()) != false ? 'fr' : 'en';
        }

        /**
         * This function handles the processing of the order, telling WooCommerce
         * what status the order should have and where customers go after it’s used.
         */
        public function process_payment($order_id)
        {
            global $woocommerce;
            $order = new WC_Order( $order_id );
            // Mark as on-hold (we're awaiting the cheque)
            $order->update_status('on-hold', __( 'Awaiting cheque payment', 'woocommerce' ));
            //$order = wc_get_order($order_id);
          
           /*  try {
                $order_desc = implode(
                    ', ',
                    array_map(
                        function (WC_Order_Item $item) {
                            return $item->get_name();
                        },
                        $order->get_items()
                    )
                );   */

                $amount_currency = $this->get_order_amount_currency($order);
                $body = [
                    "transaction_amount" => $amount_currency['amount'],
                    "transaction_currency" => $amount_currency['currency'],
                    "transaction_reason" => substr($order_desc, 0, 255), // Get first 255 chars
                    "app_transaction_ref" => $order->get_order_key(),
                    "customer_name" => $order->get_formatted_billing_full_name(),
                    "customer_email" => $order->get_billing_email(),
                    "customer_lang" => $this->get_locale()
                ];

                if ($this->is_order_from_cameroon($order))
                    $body['customer_phone_number'] = preg_replace('/[^0-9]/', '', $order->get_billing_phone()); // Ignore non numeric

                $mode = get_test_mode(); //<------------ Change to TEST for test server, PROD for production-->
                
               /* $parameters = [
                    'identifier' => $identifier,
                    'currency' => $currency,
                    'amount' => $amount,
                    'details' => $details,
                    'ipn_url' => $ipn_url,
                    'cancel_url' => $cancel_url,
                    'success_url' => $success_url,
                    'payxaf_public_key' => $payxaf_public_key, 
                    'site_logo' => $site_logo,
                    'checkout_theme' => $checkout_theme,
                    'customer_name' => $customer_name,
                    'customer_email' => $customer_email,
                ];
                */
                
                $url = get_test_mode();  
                // Get payment link from Payxaf
                $result = wp_remote_post($url, array(
                    /* str_replace('{public_key}', $this->public_key, self::API_URL),
                    ["body" => $body, "sslverify" => false]   */ //byme
                    // Passing variables from form page
               
                        $identifier = uniqid(),
                        $payxaf_public_key = "get_public_key()",
                        $site_logo= "https://app.payxaf.com/assets/images/logoIcon/logo.png",
                        $checkout_theme = "get_checkout_theme()",
                        $currency = $this->get_option('currency'),
                        $amount = $this->get_option('amount'),
                        $details = "testing",
                        $ipn_url = "www.one.com",
                        $cancel_url = "www.two.com",
                        $success_url = "www.three.com",
                        $customer_name = $order->get_formatted_billing_full_name(),
                        $customer_email = $order->get_billing_email(),
                    ));
                    
                    if(!is_wp_error($result))
			        {
				    $response_body = wp_remote_retrieve_body($result);
				    $resp_array = json_decode($response_body);
				    if(isset($resp_array->status))
					return $resp_array->status;
				    if(!isset($resp_array->status) && isset($resp_array->message))
					return; //wc_add_notice(  $resp_array->message, 'error' );  by me
			}
            else
            wc_add_notice(  'Failed to initiate transaction please try again later', 'error' );
    
            }
            /*
            $ch = curl_init();
            curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
            curl_setopt($ch, CURLOPT_URL, $url);
            curl_setopt($ch, CURLOPT_POSTFIELDS,  $parameters);
            curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
            $result = curl_exec($ch);
            curl_close($ch);  */
            
            //$result contains the response back.
            //echo $result;
            /*$_SESSION['result'] = $result;
            $data = json_decode($result, false);
            $success = $data->success;
            $_SESSION['success'] = $success;
            $_SESSION['details'] = $details;
            $_SESSION['identifier'] = $identifier;
            $_SESSION['currency'] = $currency;
            $_SESSION['amount'] = $amount; */
            //echo $success;
            //echo $details;
           // $data = json_decode(  $resul, false);
           // $success = $data->success;
            
          //  header("Location: $data->url");  
           // echo $result;        
            
            // Get raw response
           /// $raw_response = wp_remote_retrieve_body($result);

            // Parse response
         /*   $response = json_decode($raw_response, true);

            if  (!(isset($response["success"]) && $response["success"] === "ok")) { 
                throw new Exception($response["message"] ?? "An error has occurred. Please try again later"); 

            } else { /*
                $order->set_transaction_id($response['message']);
                $order->add_order_note('Payxaf payment initiated with reference: ' . $response['message']);

                // Clear cart
                WC()->cart->empty_cart();

                return [
                    'result' => 'success',
                    'redirect' => $response['payment_url'] 
                ]; */

            } /* catch (Exception $ex) {
                $order->add_order_note("Payxaf payment init failed with message: " . $ex->getMessage());
                wc_add_notice(__('Payment error : ', 'woothemes') . $ex->getMessage(), 'error');

                if (isset($result)) {
                    payxaf_log_data('Request <-----');
                    payxaf_log_data($result);
                }
                if (isset($raw_response)) {
                    payxaf_log_data('Raw response <-----');
                    payxaf_log_data($raw_response);
                }
                if (isset($response)) {
                    payxaf_log_data('Response <-----');
                    payxaf_log_data($response);
                }

                return;
            } */
        }
   // }


    /* ============================================ INCLUDE OTHER FILE =========================================== */

    // including the callback
    include 'include/payxaf_callback.php';

    // including the order_key in wc admin order list
    include 'include/payxaf_hooks.php';

    /*=========================================================================================================== */
//}

add_action('plugins_loaded', 'payxaf_gateway_init', 0);
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